<?php
declare(strict_types=1);

namespace Fgm\Drupal\Composer;

use PHPUnit\Framework\TestCase;

final class MergeParamsCommandTest extends TestCase {

  /**
   * Test MergeParamsCommand::merge().
   *
   * @covers \Fgm\Drupal\Composer\MergeParamsCommand::mergeDeepArray
   */
  public function testMergeDeepArray() {
    // Base array (like a dist.params.local.yml).
    $dist = [
      'keyedArray1' => [
        'key1' => 'dist1',
        'key2' => 'dist2',
        'key3' => 'dist3',
      ],
      'indexedArray1' => [
        'dist1',
        'dist2',
        'dist3',
      ],
    ];
    // Overriding array (like params.local.yml).
    $local = [
      'keyedArray1' => [
        'key1' => 'local1',
        'key3' => NULL,
        'key4' => 'local4',
      ],
      'keyedArray2' => [
        'key1' => 'local1',
      ],
      'indexedArray1' => [
        'local1',
        'local2',
      ],
    ];
    // Merged array (like merged.params.local.yml).
    $merged = MergeParamsCommand::mergeDeepArray([$dist, $local]);
    $expected = [
      'keyedArray1' => [
        // Key1 : Dist value is overrided by local value.
        'key1' => 'local1',
        // Key2 : No overriding in local, dist value is transmitted.
        'key2' => 'dist2',
        // Key3 : Dist value is overrided with a NULL value: key3 is removed.
        // Key4 : No key4 in dist array, local Key4 is added.
        'key4' => 'local4',
      ],
      // No Array2 in dist, local Array2 is added.
      'keyedArray2' => [
        'key1' => 'local1',
      ],
      // Dist indexed array is replaced by local index array.
      'indexedArray1' => [
        'local1',
        'local2',
      ],
    ];

    $this->assertEquals($expected, $merged);
  }

}